Duplicator



5 ing position and in the Q lltr endswhen out u v latches 2,5, and the clip Patented Sept. 21, 1926.

UNITED-,STATES CLARENCE E. MORRISON, VO1" ALBANY, NEW YORK.

DUPLICATOR.

Application med January 15, ieee. serial N. sitze,4

This invention relates to duplicating machines. The object of this invention is to provide a simple, efficient, and comparatively inexpensive rotary duplicating machine; none vwhich will be more simple and compact than present devices of the same general characte'rg'and a cylindrical stencil-holder for use thereon, which will have a greater effective working area than do the present types of such cylinders having the same length and diameter, and one wherein the surface to be inked may be wholly exposed, thereby permitting the proper inling thereof 'to be easily accomplished, and without removing, or loosening the f astenings'of the stencil.

The manner in which I accomplish my object is illustrated in the accompanying dra-wings, in which:

y Fig. 1 a top plan view of my improved, simplified, rotary duplicator; Fig. 2 is a rear elevation, and Fig. 3 is a side elevation of the same. Fig. l is a cross-section through the stencil-holder and illustra-tes the manner in which the ends of the stencil sheet are secured to the stencil-holder, and the manner in which the cylinder may bel opened and the inner surface thereof exposed.

The same reference characters refer to the same parts throughout the several views.

Referring to the drawings, the frame of my improved rotary Vduplicator preferably consists of a singlepiece, which may be formed from aI sheet of metal, and which comprises a base plate, b2, at each end whereof is an upstanding end piece, b3 and b", each kof Vwhich carries an extension, b5 or be, on the `outer side and along the top edge of whichis formed afrib 67 or 68'., Extending downward from, and then parallel to the base plate b2, so as to form a C-shaped recess adapted to admit the edge of a table or other convenient support, is a post b9, in the horizontal portion of which is a thumb-screw blo, whereby the device may be securedto such support. v

' In the 'upper .ends of the parts b5 and 'b4 are formed suitable notches or open bearin gs, 22, adapted to Y nions, 20,*on the cylindrical stencil-holder SH, and in the lower portions thereof are formed inverted U-sh'aped slots, s?, in` line with each other, and in one end orv the other of which the shaft, p, of the press roll is j ournalled, Vin the inner endswhen in vworkof service.

Vthe vstencil against the press roll.

`ders 23 and 24, (each of "in Fig.

act as journals for the trun- Slidable on the extensions b5 and b,

bridging the space. therebetween, is a feeding table T, preferably formed of sheet meta-l, each end of the table being bent downwardly, then inwardly, to form a groove adapted to f it s lidably on the ribs, 777 or 58, on the proyections b5 or 56. The outer or forward edge of the table is turned up to form a stop, t. l

The press roll, P, ofmy improved device is provided with a shaft, p, the ends of which are Journalled 1n the inner end of the slots s3, when the parts are in operative positions.

The slots s3 are so positioned that when the shaft, p, is journalled. in vthe inner ends thereof the press roll will prevent the trunnions, 2O,l on the stencil-lmlder SH, fromseating in the bottom of the n'otches22, thereby permittingA the springs,

The other or outer ends of the slots s3, are so positioned that when the press roll is forced over until the shaft, p, Vis journalled therein, the press roll is removed asuificent distance from the stencil-holder to insurefitsbeing out of contact therewith when the trunnions 2O are forced'downward to a seat in the bottom of the notches, 22, under the urge of the springs S. v f v My improved cylindrical stencil-holder SH, comprises two complemental half cylinin the usual manner sov that ink spread on the inner surface thereof will be absorbed by the ink pad), so hinged together, as at 7L, thatthe ycylinder may be'opened out as shown 4, and indicated by dottedv lines vin Fig. 3. The lfree edge of the half-cylinders are preferably fastened together by suitable spring latches 25. `In one of the half-cylinders, 23, each end piece, or half head carries a trunni on, 20, adaptedfto support the cylinder, and on one of these trunnions is secured a crank 26 and handle H, whereby the cylinder may be rotated at will; the end pieces in .the other half, 24', of the cylinder are notched to fit over the trunnions.

Near' the free edge of there is provided projections 27, adapted to enter' holes in the bound end of the stencilso as to secure the same thereto.

of the stencil I use. a channel-like'spring vclip 28. The free edges of the'half-cylinders may be depressed g so ,that thev hooks 27,

which is perforated onev half-cylinder, a number of-hool-like For fastening the other end 28,*will all lie-below', l

or ins-ide the curi-edplnne of the cylinder. The cylindrical stencil-holder is held in plece, and forced against the press roll(xvhen it is in operetive position) by the springs ti, one end of these springs being secured-preferably permanently, to the trunnions, the other ends hooked under the projections (795 7 G n ,t n 1 rv or o on the ri eine oi the device. ine springs, S, have dual functions, that of pro: viding tension betfefeenA Ythe press Aroll and the stencil-holder, end yof securing the stenoil-h lder in place in the derice.

'It is self eviden-t thiit the device shown may be used wit-l but a h cylinder When but e short stencil i "med, i. e., the 24 of the cylindersi ovfn nie-y be omitted and l,the free end of the stencil clipped to the edge of the port 23 opposite the side Whereon the hoolrs 27 are located.

A duplicator, or osci ding du'- plicetor if but e. helf'cjvlinder is used, constructed suhetentiellj,7 es lustretedhnd described, Will be simple, e1 cient, end coinpeietively inexpensive; while the increased available Working,` surface the 'hinged .two-part stencil-holding' cylinder,y due to the vabsence of the'iisuel grip through which the device is to be i-nlred, end which is necessary with the usuel sinegll diameter cylinders, makes it possible to-obte-in the desired length of Working surface on e smaller diameter cylinder andso nml-res for eoinpectness; and the zibilitj,7 to open out Athe tivo parts of the stencilholder, and so expose the Whole of their inner surfaces, inelres it e very easy netter to inl; or r'e-inlr the Vinl-1 p21-d without removing and rra-applying the stencil. Providing for the shifting` of the position of the'press roll for the operative to the inoperative position, in the manner shown und described, permits the press roll to be 'removed et Will, Without withdrawing the sheft therefrom; endthis orrvo'ement also makes easily possible the application of u covering ,sheet to the stencil so the-t the same Will 'be maintained in usable conditionA for :i considerable period of time, and not become being' under te ion or pressure damaged by at the point Where it iney have stopped when iii contact with the cylinder.

I claim: Y Y l. ln a duplicator, a Yfreine on the under side whereof is forinede clamping ineens r-.ihei'febj7 the Vd-ei'ice may be detechehly secured to e support, and which carri-'es on the upper side thereof a spiced pair of upright brackets leach of which has 'an open bearing formed in the top thereof, fri-iid neer the bettom whereof is an inverted U-shep'ed Slot adapted., to pass the endevof e shaftcarrying press-roll 4and each end thereof to forni e. kbearing therefor; a press roll, journalier?. in seid slots et rotate Vle stencil-holder, With pivot pins et the ends thereof, Yjournelle-,d in vthe open bearings iin the 'tops of `holder in 'portion beneath seid bese portion;

seid slot so shaped,

and springs holding seid stencil iy s bearings, enc.. normallyv forcing ring surface thereof into intimate y iti the Working surface of seid bA ecketsj the v, or

n e. duplicator, e frame on the under is formed e clamping ineens the device may be detechably seJ ed to e support, and which carries on. the side thereof e spaced pair of upright cets each having forwerdly projecting erin, erich of harlingen open id brackets hearing `he top thereof, and near the bottoni there( inverted isi-shaped slot adopted to lie ends yof the shaft of e cech :er-,id thereof to form a fehle plete hridginv the .Werdly projecting erins f e press roll, journelled in L Stencil-holder, vxith ls thereof, journelled in the gs in theI tops'o'f seid brackets; x holdin0V seid stencil-holder yin its d norn illv 'Qing the Working thereof, into 'intimate' Contact with "rice of seid press roll. Y

.ln :i duplicator, a frame on the under eide Wl'iereof is formed a clamping means whereby the device may be detechably sered to support, andwhich carries on the er e thereof e spaced pair 0f upright breclrets each having a forwardly projecting erm., each of seid brackets having an open bearing' in the top thereof, and neer the bei om thereof en inverted U-shraped slot e, ated to pass the endsof the shafts of e" p' roll, and each end thereof to forni :L l

searing' therefor, said slots so positioned that when the press roll is journalled in one end thereof it will be in contact with the stencildiolder, and" when in ther other Y,end

thereof it will be out of vContact With'seidv '-h'oller; a table sli-debio on, and bridging the space between, the forwardly projecting urine of said brackets; ajresiliently surfaced press roll, kjourhalled in said slot; e rotatable cylindrical stencil-holder,

longitudinally, one of seid parte having trunnions formed on the ends thereof, journelled in seid open bearings in .said brackets;

and springs holdingfsaid stencil-holder in its hearings, end norn illy forcing the ivorlring' surface with the Working' surface of sei-d press roll.

l. A freine for e duplicating machine, comprising e bese plete portieng-'a clamping and e' bracket projecting upward from Yeach Aend of seid bose portion, `the upper ends of sai-d bracket .having 'ein open bearing formed therein .and adapted to ect es journals for e rotetahle stencil-holder, .and eeehihevingen inverted Ueheped slot meer kthe bese thereof, and so, postenedwith comprising tiro conipleinentel parte hinged together thereof into intima-te' Contact,

reference to said open bearings, that a press roll may be journalled in either end thereof, passed from one end to the other Without be ing removed therefrom, and when journalled in the inner ends of said slots will normallyV be in operative contact with a stencil-holder in place in said open bearings, and when moved to the outer ends of said slots will be out of contact with said stencil-holder.

5. ln a frame for a duplicating machine, an aligned pair of inverted U-shaped bearing slots adapted to have a press roll journalledtherein, said slots so shaped, and positioned with reference to the point at which a rotatable stencil-holder is journalled in the frame, that a press roll in place in one end thereof would normally be in operative contact with said stencil-holder, and when moved to the opposite ends of said slots will be out of Contact therewith.

6. A cylindrical stencilholder for a duplicating device, and comprising: a complemental pair of hollowed, perforated, halfcylinders hinged together longitudinally, the

ends of one of said pair provided with pivot pins, the free edges of said half-cylinders provided with means whereby the ends of a stencil sheet may be secured thereto, and with means whereby the two maybe separably secured together.

,projecting pivot points, the free edge, of one of said half cylinders provided with hooklike projections whereby one end of a stencil sheet maybe secured thereto; and means whereby the free edges of saidhalf cylinders may be separably securedr together.

8. A stencil-,holder for a rotary duplicating machine, comprising: a complemental lpair of hollowed, perforated, half cylindersV hinged together longitudinally, the axis of the hinge substantially in the plane of the periphery ofthe cylinder. f

9. A duplicating machine substantially as illustrated and described, and including a hollow perforated cylindrical stencil-holder, divided, and hinged together longitudinally.

In testimony whereof l have affixedl my signature. l

CLARENCE E. MORRISON. 

